Quart (n.) : The fourth part; a quarter; hence, a region of the earth.
Quart (n.) : A measure of capacity, both in dry and in liquid measure; the fourth part of a gallon; the eighth part of a peck; two pints.
Quart (n.) : A vessel or measure containing a quart.
Quart (n.) : In cards, four successive cards of the same suit. Cf. Tierce, 4.